Rakhim Davletkaliyev, a software developer, writer and podcaster, recently launched two new podcasts. One of the things he was asked by people following the launches was "but how do I subscribe, it's not on iTunes/Google Podcasts?" He writes: Podcasts are simply RSS feeds with links to media files (usually mp3s). A podcast is basically a URL. And podcast clients are special browsers. They check that URL regularly and download new episodes if the content of the URL changes (new link added). That's it, no magic, no special membership or anything else required. The technology is pretty "stupid" in a good way. Ever since tech companies started waging war against RSS, podcast distribution became visually RSS-free. What do you do to subscribe? Easy, just search in the app! For the majority of iOS users that app is Apple Podcasts, and recently Google made their own "default client" for Android -- Google Podcasts. It looks like podcast clients are similar to web browsers and just provide a way to consume content, but the underlying listings make them very different. Corresponding services are actually isolated catalogs. When you perform a search on Apple Podcasts, you aren't searching for podcasts. You are searching for Apple-approved podcasts. And if the thing you're looking for is not there, then... well, you get nothing. Most Podcast clients still accept RSS. Apple Podcasts, iTunes, PocketCasts, OverCast, PodcastAddict. Google Play Music doesn't say anything explicitly, but you can just put RSS URL into the search field and it works. For now. I won't be surprised if these apps gradually and silently remove this feature.